Jaiminīya (Talavakāra) Brāhmaṇa 30.181.p3

30.181.p3

Now the Santani sāman. Just as two men without a common abode separate and depart, so the sixth and seventh days separate and depart. Just as one would join a horse with a harness, so here is the Santani. Of it he sings the prelude once, he chants the response thrice, they chant the finale thrice. These amount to seven, the form of the seventh day, for the continuity of the seven-day period, for non-interruption.